Make Stallman proud

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/3a11db5f408095b8f08b098ec2066947f4b72ce2' (2022-08-10)
  → 'github:NixOS/nixpkgs/c4a0efdd5a728e20791b8d8d2f26f90ac228ee8d' (2022-08-12)

flake.lock

@@ -38,11 +38,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1660162369,
+        "lastModified": 1660305968,
-        "narHash": "sha256-pZukMP4zCA1FaBg0xHxf7KdE/Nv/C5YbDID7h2L8O7A=",
+        "narHash": "sha256-r0X1pZCSEA6mzt5OuTA7nHuLmvnbkwgpFAh1iLIx4GU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3a11db5f408095b8f08b098ec2066947f4b72ce2",
+        "rev": "c4a0efdd5a728e20791b8d8d2f26f90ac228ee8d",
         "type": "github"
       },
       "original": {

flake.nix

@@ -29,10 +29,7 @@
     let
       system = "x86_64-linux";
 
-      pkgs = import pkgs {
+      pkgs = import pkgs { inherit system; };
-        inherit system;
-        config.allowUnfree = true;
-      };
 
       lib = nixpkgs.lib;